Fixed installation issues

Author: enicolasgomez

webapp/dev_package.json

@@ -36,7 +36,9 @@
     "react-redux": "^7.2.0",
     "react-sortable-tree": "^2.8.0",
     "redux": "^4.1.0",
-    "three": "0.111.0"
+    "three": "0.111.0",
+    "sass-loader": "^7.2.0",
+    "node-sass": "^4.0.0"
   },
   "resolutions": {
     "@material-ui/core": "4.11.4"

webapp/package.bak

@@ -36,7 +36,9 @@
     "react-redux": "^7.2.0",
     "react-sortable-tree": "^2.8.0",
     "redux": "^4.1.0",
-    "three": "0.111.0"
+    "three": "0.111.0",
+    "sass-loader": "^7.2.0",
+    "node-sass": "^5.0.0"
   },
   "resolutions": {
     "@material-ui/core": "4.11.4"

webapp/package.json

@@ -36,7 +36,9 @@
     "react-redux": "^7.2.0",
     "react-sortable-tree": "^2.8.0",
     "redux": "^4.1.0",
-    "three": "0.111.0"
+    "three": "0.111.0",
+    "sass-loader": "^7.2.0",
+    "node-sass": "^5.0.0"
   },
   "resolutions": {
     "@material-ui/core": "4.11.4"
@@ -83,15 +85,8 @@
     "less": "^3.11.1",
     "less-loader": "^5.0.0",
     "mini-css-extract-plugin": "^0.7.0",
-    "postcss-flexbugs-fixes": "4.2.1",
-    "postcss-loader": "3.0.0",
-    "postcss-normalize": "8.0.1",
-    "postcss-preset-env": "6.7.0",
-    "postcss-safe-parser": "5.0.2",
     "raw-loader": "^0.5.1",
     "react-resize-detector": "^6.7.4",
-    "sass": "^1.32.12",
-    "sass-loader": "^10.0.5",
     "slimerjs": "^1.0.0",
     "source-map-loader": "^0.2.3",
     "style-loader": "^0.13.2",

webapp/yalc.lock

@@ -2,15 +2,15 @@
   "version": "v1",
   "packages": {
     "@metacell/geppetto-meta-client": {
-      "signature": "8b0d0d1a321f5ee50b02500942c70bdd",
+      "signature": "9f667d89932afb12e262f8d8746fcbc0",
       "file": true
     },
     "@metacell/geppetto-meta-core": {
       "signature": "0fec34906589f67e813f2fc1d8697ecf",
       "file": true
     },
     "@metacell/geppetto-meta-ui": {
-      "signature": "e7a6a3e215cbb1c11db0a3974ebd31ac",
+      "signature": "8971ad352d957f4f5ddf5518790845d5",
       "file": true
     }
   }